I have this problem but can't find the files to edit

[driftwood]

I found the solution to my problem - which a wordpress import plugin stalling - here https://support.plesk.com/hc/en-us/articles/115000064929-Website-is-not-accessible-The-timeout-specified-has-expired-Error-dispatching-request-to

By I can't find these files - I changed the timeout is what seem hundreds of places and tried all sorts of fixed for this but none work. I'm hoping this will fix it it. If not I'll need to remove FPM somehow.

Apache version: Apache/2.4.39
PHP version: 7.3.3
MySQL version: 10.1.38-MariaDB